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MTG Arena Patch Notes Patch Notes – Core Set 2021 Game Update

Check out the full detailed patch notes for the June Core Set 2021 update below. As another reminder, you can use the code PlayM21 in the in-game store to redeem 3 free Core Set 2021 packs! Make sure you claim all the available free MTG Arena codes if you have not already.


  • Core Set 2021 is now available!
  • macOS is now supported through partnership with the Epic Game Store!
    • Check the Status Page for current maintenance information.
    • Please Note: You may only be logged into one instant of MTG Arena at a time.
  • Changes to pack collation for fully reprinted cards


Magic: The Gathering Arena now requires a 64-bit operating system.


  • macOS is now supported naitively through the Epic Games Store. Same game, same collection, new platform!
  • For more more information on play MTG Arena on macOS as well as cross-platform support, please refer to our announcement article.
  • For known issues specific to the macOS client, please refer to the macOS Known Issues thread.


  • It’s Magic time! Core Set 2021 is now available on MTG Arena!
  • Core Set 2021 Sealed, Premier Draft, and Traditional Draft events are now available!
  • Core Set 2021 cards are considered legal in all constructed formats (Historic and Standard)



When permanents are phased out, they’re treated as if they don’t exist. It can’t be the target of spells or abilities, its static abilities have no effect on the game, its triggered abilities can’t trigger, it can’t attack or block, and so on. They phase in or out before your untap during your untap step.

  • Phasing out doesn’t cause any “leaves the battlefield” abilities to trigger. Similarly, phasing in won’t cause any “enters the battlefield” abilities to trigger. (Any one-shot effects that are waiting “until [this] leaves the battlefield,” such as that of Kitesail Freebooter, won’t happen when a permanent phases out.)
  • Each Aura and Equipment attached to a permanent that’s phasing out also phases out. They will phase in with that permanent and still be attached to it. Similarly, permanents that phase out with counters phase in with those counters.
  • An attacking creature that phases out is removed from combat.
  • Creatures that phase in are unaffected by summoning sickness. They can attack and use activated abilities during the turn they phase back into play.


Casting noncreature spells inspires certain creatures to feats of martial glory. These creatures with the returning prowess keyword get +1/+1 for the turn whenever you cast a noncreature spell.

  • Any spell you cast that doesn’t have the type creature will cause prowess to trigger. Playing a land also won’t cause prowess to trigger.
  • An ability that triggers when a player casts a spell resolves before the spell that caused it to trigger. It resolves even if that spell is countered.


Players have been putting the top card of their library into their graveyard since the Antiquities™ set, and that’s quite a lot of words to say to describe the action. Players have called this “mill,” named after the card Millstone, and this term has now been promoted to an official game term

  • If a player is instructed to mill more cards than they have in their library, they put all of the cards in their library into their graveyard. On the other hand, if a player is given a choice to mill more cards than they have in their library, they can’t choose to do so
  • Once a player’s library is empty, that player doesn’t lose the game until they try to draw a card and can’t.


Core Set 2021 has gone to the dogs in the best way possible! Not only does the set itself contain more canines than you can shake a stick at, all existing Hounds have received errata to be Dogs instead.



  • A phased out creature never leaves the battlefield. You can tell when a creature is phased out as it will be surrounded by the ripples of Teferi’s time magic. Mouse over the creature to see the phased out hanger for more information.


  • If there are multiple Nine Lives on the battlefield, MTG Arena will automatically apply replacement effects to keep them all as far away from nine counters as possible, even when taking damage from multiple sources at the same time (e.g. combat damage).


  • This card (and similar cards already in MTG Arena) now have a count indicator as a quick reference how many copies are in your graveyard.
    • Note that this specific card draws one more card than the count!




  • If you’ve collected a playset of a fully reprinted card, we will be adjusting the rate at which you’ll receive these cards in store boosters. We’re defining “full reprints” as a card that shares both the name and artwork of a card that already exists in MTG Arena.
  • You will only receive a copy of fully reprinted cards from a pack after you have received playsets of all other rares and mythic rares (i.e. the same thing we do with a card if it’s banned in Standard).
  • If you already own a playset (four copies) of a card that is fully reprinted, you will only receive further copies of that card from store boosters if you already own playsets of all other rares and mythic rares from that set (i.e. the same thing we do with a card if it’s banned in Standard).
  • The game will check this against your entire collection. For example, if you own three copies of Fabled Passage from Throne of Eldraine, and you open a fourth in Core Set 2021, the game will adjust the distribution rate of this card in both Throne of Eldraine and Core Set 2021 booster packs now that you’ve completed a playset.
  • This change does not impact Limited boosters; you will still receive them at their original distribution rate in Draft or Sealed events.
  • This change only applies to fully reprinted rares and mythic rares; we will not be adjusting the distribution rate of fully reprinted commons or uncommons.
  • Core Set 2021 cards that are also available in Jumpstart are treated as being part of Core Set 2021 for anything that affects distribution rate or duplicate protection.


  • We’ve added a Quick Tap key: Hold down Q to tap multiple mana producing permanents, release to submit all of them at once.
    • IMPORTANT NOTE: This is optimized for speed, so if you care about the color of mana a source produces, you should still tap that one normally.
  • We’ve updated the Extra/Consecutive turn indicator. You now see an indicator any time the upcoming turn order is out of the ordinary!
  • Updated behavior of Brawl Commanders such that they actually do zone transfer when they die or are exiled, and the player then has one chance at the next state based action to transfer them to the Command Zone.
  • We no longer automatically group replacement effects that appear to be identical if Auto Choose Replacement Effects is turned off.
  • Mousing over an ability on the stack with an additional cost (say Witch's Oven sacrificing a creature) now indicates the card used to pay that cost.
  • Cards in paper that allowed you to search the graveyard or your library and then shuffle your Library only if it was searched now do the same on MTG Arena.
  • Cards that use the new keyword Mill have appropriate hangers and interactions.
  • Cards that have a badge for the number of instant and sorcery cards in your graveyard now show that badge in all zones.
  • Cards that care about the count of cards of the same name in the graveyard (like Undead Servant)now show a count of those cards everywhere other than on the battlefield.


  • Mystic Subdual: We now show the “Mutating onto the creature won’t give it new abilities. It can gain abilities in other ways.” reminder text on Mystic Subdual’s rule text, not just in a hanger.


  • Added a in-game tool tip to show all of the advanced search commands usable in the deckbuilder’s search filter:
  • Added several improvements to the deckbuilder’s “pile”/horizontal view:
    • In the deckbuilder, “pile” / “column” view can be expanded and retracted to take up most of the screen (similar to when viewing a preconstructed deck in our in-game events)
    • Searching for cards in this expanded view splits piles into two horizontal rows, with the cards searched for in the top row and other cards in the bottom row. For example, searching for creature (T:Creature) :
    • In Sealed and Draft events, when in the expanded horizontal view filter buttons ( � � � � � ) can be used to add all cards of that color to your deck from your sideboard
    • Suggested cards are highlighted in blue, and can be removed with the filter buttons as well. They are finalized into the deck by saving or closing the expanded view.
  • When importing decks, misspelled names are ignored if you have the set name and collector number on the line.


  • Information about startup, and what specifically is happening, is now more specific about the step you’re in. This should help with identifying and troubleshooting any startup related issues:


  • Cards from Core Set 2021 are now in Standard individual card rewards (ICRs). Cards from Guilds of Ravnica, Ravnica Allegiance, War of the Spark, and Core Set 2020 are no longer potential rewards for Standard ICRs. These sets will now be available in Historic ICRs.
  • A permanent Brawl queue will be available starting July 1. It will award both quest progress as well as daily/weekly win rewards. With this in place, Brawlers’ Guilhall and Wednesday Brawl events will come to an end.


  • June 26 – July 10: Ikoria: Lair of Behemoths
  • July 10 – July 24: Core Set 2021


Follow social distancing guidelines, and stay connected with your local game store as you participate in FNM Home on MTG Arena!

  • June 26: Celebrate Core Set 2021 release, any play event on MTG Arena you wish!
  • July 3: Singleton
  • July 10: Artisan


  • July 4 – July 7: Standard Metagame Challenge
  • July 11 – July 14: Core Set Constructed



  • Core Set 2021 now available inside the store. Pick up the new Set Mastery Pass, Core Set 2021 Packs, and Showcase Bundles!
  • 5 Planeswalker Showcase Bundles are now available inside the store. Each bundle features the core planeswalkers and their respective spells for 800 Gems or 4,000 Gold.
  • Theros Stargazing sleeves from the Secret Lair bundles are now available inside of “Sleeves” in the store. Also the Thalia Guardian of Thraben Sleeve!
  • New “Super Bundles” will occasionally appear in the store for a limited time providing a significant discount on card styles for popular decks.


New Feature: Bundle prices automatically update based on the cosmetic contents you own!

  • The discount for the bundle is applied to each item individually; so you are only purchasing for the content you don’t have in your collection. The items you have already collected will be dimmed in the bundle display.


  • Bundle A is discounted at 50% off and contains 5 common card styles.
  • To a player has none of the contents, the price would be 1000 gems (5x Styles at 400 gems per, all 50% off).
  • To a player who owns 2 of the card styles already, the price would be 600 gems (3x styles at 400 gems per, all 50% off).

Basri Showcase Bundle

  • Contains: Basri Ket Showcase Style, Basri’s Lieutenant Showcase Style, Basri’s Solidarity Showcase Style, Basri’s Acolyte Showcase Style
  • Costs: 800 Gems or 4,000 Gold.

Teferi Showcase Bundle

  • Contains: Teferi, Master of Time Showcase Style, Teferi’s Ageless Insight Showcase Style, Teferi’s Tutelage Showcase Style, Teferi’s Protege Showcase Style
  • Costs: 800 Gems or 4,000 Gold.

Liliana Showcase Bundle

  • Contains: Liliana, Waker of the Dead Showcase Style, Liliana’s Standard Bearer Showcase Style, Liliana’s Devotee Showcase Style, Liliana’s Steward Showcase Style
  • Costs: 800 Gems or 4,000 Gold.

Chandra Showcase Bundle

  • Contains: Chandra, Heart of Fire Showcase Style, Chandra’s Incinerator Showcase Style, Chandra’s Pyreling Showcase Style, Chandra’s Magmutt Showcase Style
  • Costs: 800 Gems or 4,000 Gold.

Garruk Showcase Bundle

  • Contains: Garruk, Unleashed Showcase Style, Garruk’s Harbinger Showcase Style, Garruk’s Uprising Showcase Style, Garruk’s Gorehorn Showcase Style
  • Costs: 800 Gems or 4,000 Gold.

Enchanted Super Bundle


Now available for purchase (through the Deckbuilder):

Nightmare Shepherd
Soul-Guide Lantern
Whisper Squad
Adventurous Impulse
Forbidden Friendship
Dirge Bat
Everquill Phoenix
Sea-Dasher Octopus
Blood Curdle
Dreamtail Heron
Migratory Greathorn
Fire Prophecy
Rumbling Rockslide
Ram Through
Boot Nipper
Essence Scatter
Daysquad Marshal
Ketria Crystal
Raugrin Crystal
Zagoth Crystal
Indatha Crystal
Savai Crystal
Sudden Spinnerets
Garrison Cat
Heightened Reflexes
Unexpected Fangs
Spontaneous Flight
Wingfold Pteron
Hornbash Mentor
Frillscare Mentor
Wingspan Mentor
Duskfang Mentor
Keensight Mentor
Vadrok, Apex of Thunder
Of One Mind
Nethroi, Apex of Death
Snapdax, Apex of the Hunt
Brokkos, Apex of Forever
Illuna, Apex of Wishes
Ruinous Ultimatum
Inspired Ultimatum
Genesis Ultimatum
Eerie Ultimatum
Emergent Ultimatum
Boneyard Lurker
Trumpeting Gnarr
Lore Drakkis
Regal Leosaur
Heartless Act
Boon of the Wish-Giver
Fight as One
Blitz of the Thunder-Raptor
Migration Path
Insatiable Hemophage Showcase Style
Auspicious Starrix Showcase Style
Archipelagore Showcase Style
Porcuparrot Showcase Style
Huntmaster Liger Showcase Style
Dirge Bat Showcase Style
Everquill Phoenix Showcase Style
Sea-Dasher Octopus Showcase Style
Cubwarden Showcase Style
Gemrazer Showcase Style
Necropanther Showcase Style
Lore Drakkis Showcase Style
Boneyard Lurker Showcase Style
Regal Leosaur Showcase Style
Trumpeting Gnarr Showcase Style
Nethroi, Apex of Death Showcase Style
Vadrok, Apex of Thunder Showcase Style
Brokkos, Apex of Forever Showcase Style
Snapdax, Apex of the Hunt Showcase Style
Illuna, Apex of Wishes Showcase Style
Thalia, Guardian of Thraben Helvault Style
Thalia, Guardian of Thraben Lunarch Style
Thalia, Guardian of Thraben Chapel Style
Thalia, Guardian of Thraben Eldrazi Style
Brain Maggot
Meddling Mage
Nyx-Fleece Ram
Pack Rat
Thalia, Guardian of Thraben
Barren Moor
Forgotten Cave
Lonely Sandbar
Secluded Steppe
Tranquil Thicket
Ancestral Mask
Inexorable Tide
Sigil of the Empty Throne
Virulent Plague
Waste Not
Bojuka Bog
Dragonmaster Outcast
Ghost Quarter
Knight of the Reliquary
Goblin Ruinblaster
Maelstrom Pulse
Merrow Reejerey
Platinum Angel
Ranger of Eos
Dreamtail Heron Showcase Style
Migratory Greathorn Showcase Style
Vulpikeet Showcase Style
Cavern Whisperer Showcase Style
Cloudpiercer Showcase Style
Parcelbeast Showcase Style
Majestic Auricorn Showcase Style
Pouncing Shoreshark Showcase Style
Chittering Harvester Showcase Style
Glowstone Recluse Showcase Style


Note: The Explorer Bundle is being retired soon; grab it now if you want this deal before it leaves. An exciting new bundle will soon be arriving to take it’s place; stay tuned!

  • Historic Anthology 3
  • Power Play Bundle
  • Cycle and Draw Bundle
  • Flash from the Past Bundle
  • Historic Honden Bundle
  • Reinforcements Bundle
  • Darius Osworth Gerhardt IV Pet


  • The Play Blade should no longer inappropriately revert to Bot Matches
  • Various fixes related to Companions and Sideboarding
  • Individual Card Rewards (ICRs) should no longer occasionally incorrectly tag a card as being “First!” in your collection
  • Lurrus of the Dream-Den has a hyphen in their name now.
  • Having two Angels of Vitality in play caused no longer causes visual bugs in the damage VFX when your opponent was attacked.
  • Spending mana from Domri, Chaos Bringer on a mutating spell no longer causes causes unbounded gaining of Riot
  • Guardian Project now interacts correctly with the triggering card being bounced or flickered before Guardian Project resolves.
  • Emblems created by Planeswalkers that also create a token (but not with the Emblem) no longer display the token when moused over.
  • The very top of the title of some full-card hangers (e.g. where it shows the backside of a double-faced card or a related token) on your opponent’s cards were being cut off. We’ve nudged that down a few pixels. Never be confused if it’s a token or a transformation again!
  • Cards that were sent to the bottom of the Library would briefly visually appear to be on top. This has been fixed (hurray!).
  • Full art tokens that gain abilities also gain a text box to display them in.
  • Tokens created by copies of creatures that had been mutated over a creature that creates tokens weren’t displaying art. They are now.
  • Cards on the battlefield now only get “…” badges when they have abilities that don’t have an icon, or would have 4 or more badges.
  • Fixed multiple issues with cards not showing styles correctly when zone transferring or mutating.
  • Fixed an issue where choosing a mutating spell as a source to prevent damage from does not result in preventing damage from the permanent it becomes.
    • Now if you prevent damage from a Porcuparrot, and then they flash something over it, you’re still good.
  • Fixed a missing string for paying mana in order to attack.
  • Cards that say you “may mill” no longer let you do so if it would require you to mill more cards than you have remaining.
  • Adventure cards that have been exiled but didn’t go on an adventure no longer show Adventure VFX.
  • Fixed an exploit that allowed players to hold control without the timer counting down.
  • We’ve updated Jenn Ravenna Tran’s artist credit in game, in line with their preference.
  • Fixed a bug that could cause badges to be inappropriately shown on cards in the deckbuilder and collection
  • When importing decks, misspelled names are ignored if you have the set name and collector number on the line
  • Editing a deck no longer removes favoriting!
  • Deck format drop-down in the deck manager scene is now large enough to show all deck formats!
  • Deck Manager format is saved when leaving and returning to the scene.


  • The Korean translation for the Core Set Constructed event description erroneously implies Core Set 2019 is legal in Standard. It is not, but all three core sets on MTG Arena (Core Set 2019, Core Set 2020, and Core Set 2021) are legal in this event.

Source: JUN 25 –

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